Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
  • Effective date searches are available only for US area codes. Our sources for non-US NPA-NXX data do not provide this information.
  • If you want to search an entire area code regardless of activity, leave both the next and past days fields set to zero.

NPA: 928 [Rate centres in NPA 928] [Dial plan for NPA 928]

NXX: 377

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
928-377 A Kingman AZ KGMNAZXC7MD  6010 NEW CINGULAR WIRELESS PCS, LLC 666      
928-377 0 Kingman AZ KGMNAZXC7MD  6010 NEW CINGULAR WIRELESS PCS, LLC 666      
928-377 1 Kingman AZ PHNDAZ91DS5  3285 LEVEL 3 COMMUNICATIONS, LLC - AZ 666      
928-377 2 Kingman AZ KGMNAZXC7MD  6010 NEW CINGULAR WIRELESS PCS, LLC 666      
928-377 3 Kingman AZ KGMNAZXCEMD  227H MERCURY VOICE AND DATA LLC DBA SUDDENLINK COMM-AZ 666      
928-377 4 Kingman AZ PHNDAZ91DS5  3285 LEVEL 3 COMMUNICATIONS, LLC - AZ 666      
928-377 5 Kingman AZ PHNDAZ91DS5  3285 LEVEL 3 COMMUNICATIONS, LLC - AZ 666      
928-377 6 Kingman AZ KGMNAZXC7MD  6010 NEW CINGULAR WIRELESS PCS, LLC 666      
928-377 7 Kingman AZ KGMNAZXC7MD  6010 NEW CINGULAR WIRELESS PCS, LLC 666      
928-377 8 Kingman AZ GLVYAZXC2MD  6529 T-MOBILE USA, INC. 666      
928-377 9 Kingman AZ GLVYAZXC2MD  6529 T-MOBILE USA, INC. 666      

Last updated: Wed, 20 Nov 2024 21:20:06 UTC

Sponsored by: FiberConX Communications Ltd.

Like this site? We accept donations via PayPal.